ViralGuard? contains 2 strains of Probiotics, L. rhamnosus R-11 ME and B. longum R-175 ME. These 2 Probiotic strains have been clinically proven to strengthen the body's immune system. Probiotics effectively prevent flu viruses from causing infection Who can benefit from ViralGuard? - The young - weakened immune systems - The elderly - weakened immune system - People who are stressed - Those who have a weakened immune system due to illness - Those who feel they follow insuffficient diet Kindly note that we do not give any medical advice. TAKEALOT.com is a retail website, selling supplements and other health-related branded products (none of which are scheduled medication). Any medical advice should be given by your personal health care professional.